Wrench



(No Model.)

T. FORSTNIER.

WRENCH.

Pa.tentedAp1-. 5,1898.

N ITED STATES PATENT rrron,

THOMAS FORsrNEaIOF New ULM, MimvnsorA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 601,772, dated April 5,1898. Application tiled March Z3, 1896. Renewed January 29,1898. SerialNo. 668,496. (No model.)

To all whom it may concern:

Be it known that I, THOMAS FORsTN-ER, a citizen of the United States,residing at New Ulm, in the county of Brown and State of Minnesota, haveinvented certain new and useful Improvements in VVrenchesg' and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable Others skilled in the art to whichit appertains to make and use the same. j

This invention relates to certain new and useful improvements inwrenches and ithas for its objects, among others, to provide a simpleand cheap construction ofwrench adj ustable to accommodate it todifferent sizes of nuts or other artioles'to be held therein and tionwill hereinafter appear, and the novel features thereof will bespecifically defined by the appended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a partV ofthis specification, and in which-'- Figure l is an elevation of myimproved wrench. Fig. 2 is a'longitudinal section through the same. Fig.3 is a section on the line 3 3 of Fig. l.

Like letters of reference indicate like parts throughout-the severalviews.

Referring now to vthe details of the draw-I ings by letter,A designatesthe stationary jaw, and B its shank. The jaw extends at an angle otherthan a right angle from the shank,

as shown, and may or may not be serrated upon its acting face. The outeror upper f ace of the shank is toothed, as seen at C.

D is the movable jaw, whose bearing-face extends from its shank D at thesame angle as the bearing-face ofthe jawof the fixed shank does from itsshank, so as to be parallel therewith, and its acting face may or maynot be serrated. v

The shank of the movable jaw has the clamp or sleeve portion E thereon,which em' braces the shank of the .xed jaw, as shown,

-on the shank of the fixed jaw.

I is a pin passed through the shank of the kmovable jaw beneath thepivot of the arms thereon, and around this pin is a spring J, one aroundeach end of the pin and held thereon by the heads of the pins, one endof each spring bearing against a notch or shoulder o' of the armsinproximity to their pivots and the other ends seated lin grooves ornotches j in the undersides of the said arms, as shown.

The bodyportion of the dog is formed with a recess K,`in which isarranged the eccentric lever or cam L, mounted on the pin or bolt G andextended to form a handle or thumb-piece M.

The operation is apparent and will be readily understood from theforegoing description when taken in connection with the annexeddrawings.

l The movable jaw is moved backward to ad- V-mit the nut or otherarticle between the jaws, andk then it is pressed forward until it en-Vgages the nut or other article, and then the cam or eccentric lever isturned backward, which forces the movable jaw tightly against the nut orother object and also holds the dog in engagement with the toothedportion of the shank of the fixed jaw, and the article will be securelyheld between the jaws of the wrench. It will=be observed thatthevmovement of the thumb-piece accomplishes two IOO 1. The combinationwith the fixed jaw and its shank, of the movable jaw, the arms pivotedon its shank, the dog carried by the said arms, and the eccentric levermounted on the dog, as set forth.

2. The combination with the fixed jaw and its shank, of the movable jaw,the arms pivoted on the shank of the movable jaw, the dog carried by thearms, the eccentric lever mounted on the dog, and the springs on theAshank of the movable jaw acting on the said arms, as set forth.

The Wrench described consisting of the fixed jaw, its toothed shank, themovable jaw,

